fix: make help and version successful discovery

README.md

@@ -21,6 +21,17 @@ Each command will identify the sample by its content, reuse compatible cached
 analysis, and produce versioned JSON by default. Human-readable presentation is
 available explicitly through `--format human`.
 
+Agents can discover the complete command surface without initializing Ghidra:
+
+```console
+ghidr --help
+ghidr decompile --help
+ghidr --version
+```
+
+These discovery requests return plain text on stdout with exit status 0 and
+leave stderr empty.
+
 ## Documents
 
 - [PRD.md](./PRD.md) defines the product requirements and initial delivery